[Mesonephroid carcinoma of the urinary bladder (clear cell carcinoma). Two case reports and review of the literature in a rare variation of the primary adenocarcinoma].

Mesonephroid adenocarcinoma of the bladder may be a malignant form of nephrogenic adenoma or nephroid metaplasia. The lesion is extremely rare in the urinary bladder, and to our knowledge 19 cases have been reported in the literature. We report two cases of mesonephroid adenocarcinoma of the bladder which were treated by radical cystectomy.